Oil-cup



T. G. PIHLFELDT AND F. C. HARTUNG.

Oll. CUP. APPLICATioN FILED Dsc. 2s, 191s.

1, 350,56 6. Patented Aug. 24, 1920.

Y. f I 5%- m9723075! e x Q71' un UNITED sTArES PATENT OFFICE.

THOMAS G. PIHLFLDT .AND FELX C. HARTUNG, OF CHCAGG, ILLINOIS.

OIL-CUP.

Specification of Letters Patent.

Patented Aug. 241, 1020.

Application led December 28, 1918. Serial No. 268,648.

To alt @0.7mm t may conce/m:

Be it known that we, THoMas G. PIHL- rnLn'r, a citizen of the .UnitedStates, and linLix C. HARTUNG, a subject of Great Britain, both residingat Chicago, in the county of Cook and tritate of Illinois, have inventeda new and useful Improvement in Oil-Cups, of which thefollowing is aspecification.

This invention relates to oil-cups and more particularly to the type ofoil-cups wherein means are provided for forcibly ejecting oil from thecup into the bearing to which it is attached and also for maintaining areservoir of oil for further feeding ofthe bearing. l v

The invention is shown in a preferred embodiment in the accompanyingdrawings in two figures, in which Figure 1 is a longitudinal sectionthrough the device, and Fig. 2 au elevation of the device from the endupon which the nipple is formed.

ln the embodiment shown in the drawing, the oil-cup comprises a mainbody portion 5 to which is rigidly attached the bored nipple (5, whichmay be threaded as Shown at 7, or otherwise adapted for attachment to abearing.

TWithin the body portion 5 is fitted a movable piston S which we preferto shape as a cup-piston, as shown in Fig. 1 of the drawings. Below thepiston S is placed a permeable membrane 9 also fitted to the interior ofthe body portion 5 and movable therein. This permeable membrane maysuitably be constructed of a fabric material, such as-felt. A suitableperforation, such as the small opening 19, passes through the lowerportion of the piston 8 to permitpassage of oil therethrough, and, ifdesired, a wick of textile material 11, -or other like device to controlthe flow of oil from the rear of the piston to its face, may beprovided. Below the permeable membrane 9, a coiled spring.12 is providedwhich rests against the constricted portion 13 of the body of the cupand exerts its force against the permeable membrane 9 to move it and thepiston 8 outwardly.

The cup is provided with a fitted cap 14; to which is pivotally attachedby any suitable means, such as the stud 15 containing an eye 16 withinthe cap, a link 17. This link 17 is fixed, for example, by soldering, toa ball 18 which may normally seat in a hooked end of a spiral centralopening 19 provided in the face of the piston 8. To the opposite pointon this ball is fixed a hook 21 in which engages the sprinol whichextends into the bore of the nipple. An opening 20 is centrally providedin the permeable membrane 9 directly beneath the opening 19 in thepiston 8 to permit of free movement of the spring and its attachmentmeans.

Thelower end of the spring' 22 is attached to the device by a suitableswivel mounting, for example, a rotatable washer 23 seated in anenlargement 21 of the bore of the nipple. The central portion of thiswasher may be struck up as shown at 25 to provide attachment means forthe hooked end of the spring 22 and at the same time perforations areprovided through the washer to permit the passage of the oil.

. of the piston S and holds the same at a constant point in the cupspaced from the top lll by means of the link 1T and preventing fiow ofthe oil through the opening 19.

In filling the cup the cap 8 is raised against the force of the spring22 sufficiently to permit a lateral movement and the opening of the to)of the cup for the introduction of oil. r t the same time the ball 1Smoves upwardly and permits the piston 8 together with the membrane 9 torisc under the action of the spring 12. T he upward movement of thepiston is not suflicient to rengage the opening 19 with the ball 18 andconsequently when oil is introduced,

it passes freely below the piston and memthe opening 19 of the piston S,thus preventing a free flow of oil through said opening and retaining inthe base of the cup substantially all of the oil below the piston andmembrane. The spring 22 then acts to draw downwardly the piston andmembrane 9, together with the cap 14. In this downward movement, themembrane 9 prevents any free flow of oil from the base of the cupthrough the piston and the oil is consequently forcibly ejected from thebase of the cup into the bearing. It is thus apparent that in thismovement the piston 8 together with the membrane 9 act together in themanner of a solid plunger when subjected to a relatively rapid downwardmovement. The oil contained above the piston 8 may,-however, seep slowlythrough the opening l0, containing the wick l1, if desired, and themembrane 9, the latter alone being sufficient in many cases' forpreventing arapid iiow of oil from the top of the piston to the base ofthe cup. it is thus'apparent that-means are provided, not only forforcibly eje'cting oil contained in the cup into the bearing to whichthe cup is applied, but also for the gradual flow of oil from areservoir contained within said cupy to the bearing.

The swivel mounting of the end of the spring 22'freely permits of anyrotary movement to which the cap ll may be subjected during handling.

Itis readily apparent that the' present invention may be embodied informs of structure Vdiffering from that presented in the accompanyingdrawings which, however,

,Y present the preferred embodiment.

7e claim as our invention: v l. An oil-cup comprising a body portionhaving an oil exit therefrom, a perforated piston movable therein, meansfor effecting downwardY movement of the piston and a4 f ward the bottomof the cup, said means permitting independent movement of said pistonwhen said cap is raised. Y

3. An oil-cup comprising a body portion, a cap fitted thereto, a pistonmovable in said body portion, an opening Vin said piston, a ball adaptedto close saidopening, a link Vconnecting' said ball to the cap andactensed spring below said piston and attached -to' said ball. f Y

4. An oil-cup comprising a body portion, a .cap fitted thereto,4 apistoninovabletherein, said piston being provided with an-opening, a balladapted to close saidopening, a link connecting-said ball to the cap, atensed spring' belowv said piston and attached toY said ball, and acoiled spring below said piston and 'tending to force the same upwardly.

An oil-cup comprisingla body portion, a nipple attachedy thereto, a capfitted to said body portion, a piston movable within said body portion,a tensed spring extending within said nipple and acting upon said capand piston and swivel means retaining said spring within said nipple. Y

6. An oil-cup comprising a body portion, anipple attached thereto, a capfitted to said body portion, a piston movable within said body portion,.a tensed spring extending within said nipple and'acting upon said capand piston, a rotatable perforated washer seated in said nipple Vandmeans for attaching said spring to said washer.

7. An oil-cup comprising a body portion, a nipple attached to one Vendthereof, a cap fitting over the other end of said body portion, acentrally bored, perforatedplunger movable within said body portion,acentrally-bored permeable membrane below said piston and movable withinsaid body portion, a coiled spring below said permeable membrane andacting to'force said mem-v brane and piston outwardly, a Y swivellymounted, tensed spring extendingwithin the bore of the nipple', a ballattached to said -spring and normally engaging the opening in-sai'dpiston to close the saine, and a link attached to said ball and to thecap.

8. AnA oil cup comprising a body portion having an oil exit therefrom, apiston movable therein and provided with an aperture permitting the Howof oil through said piston, and means cooperating with said piston toVpermit gradual flow of oil through' the opening therein when at rest andpreventing passageof oil therethrough on downward movement of thepiston.

'Y 9. 'Xn oil cupcomprising a body portion `havingv an oil e-Xittherefrom, a cap fitted thereto', a 'piston movable in saidbody portion,a valve cooperatingv with the piston,

Vand means connecting the valve and cap Vwhereby' on opening Vthe latterthe valve is Vopened and oil is permitted to flow freely through thepiston. Y Y

- VTHOMAS G. PIHLFELDT.

FELIX C. HARTUNG.

